Hello List,
I now have my MythTV setup pretty well sorted. I have everything I need
working and all my shows setup on a schedule. So far it is working
beautifully, no problems to speak of in the last couple weeks, the WAF is
way up too!! I am a happy camper, this is miles ahead of my Windows setup I
had previous to this and to think I was using 2 commercial apps and it came
no where close to what I have with Myth. I am so glad I decided to learn
Linux and made the jump to Linux on both my machines(Myth and my Office
setup). Big thanks too all the programmers, theme builders and everyone else
involved with the project.
My last remaining issue is to get my tv working at 1080i. Right now I have
it working at 480p which is pretty decent and everything is working well but
I know the TV is able to do 1080i as that is what I was running at with my
Windows setup. For the life of me I just can't get it working at 1080i and I
have tried numerous settings etc.
I am running on an Nvidia-6600 PCIe card which is hooked up via DVI to a 34"
Widescreen RCA Scenium CRT(Yes a CRT!!), Love this TV. Although I would like
the get a projector sometime down the line as my basement is perfectly
suited for it, but that's for another day.
My first step involved booting into Windows at my desired settings which
actually turn out to be an underscanned 1920x1080i setting, works out to be
1768x992i, it works at 1920x1080 but there is alot of overscan so I would
prefer the 1768x992. Anyways, I noticed within the windows Nvidia drivers
there was a selection for "Advanced Timing". I figured this was perfect as I
could simply write down the timings and somehow extract a ModeLine. Here is
what I have from the Windows driver at my desired res:
Horizontal:
Front Porch = 88
Sync Width = 48
Back Porch = 296
Sync Polarity = +
Back End Active = 1920
Front End Active = 1768
Scan Rate = 33.75kHz
Vertical:
Front Porch = 4
Sync Width = 10
Back Porch = 118
Sync Polarity = +
Back End Active = 540
Front End Ative = 992
Refresh Rate = 30.026Hz
Which I interpreted as Modeline "1768x992-HD" 74.250 1920 2008 2056 2352
1080 1084 1094 1212 interlace +vsync +hsync
Just for Comparison here is the settings for true 1920x1080
Horizontal:
Front Porch = 88
Sync Width = 48
Back Porch = 144
Sync Polarity = +
Back End Active = 1920
Front End Active = 1920
Scan Rate = 33.75kHz
Vertical:
Front Porch = 4
Sync Width = 10
Back Porch = 30
Sync Polarity = +
Back End Active = 540
Front End Ative = 1080
Refresh Rate = 30.026Hz
Which I interpreted as Modeline "1920x1080-HD" 74.250 1920 2008 2056 2200
1080 1084 1094 1124 Interlace +vsync +hsync
To furthe complicate things I tried running PowerStrip and this is what it
spit out for a Modeline(seemed to be identical for both 1920x1080 and
1768x992):
"1920x1080" 74.250 1920 2008 2052 2200 1080 1084 1094 1125 interlace +hsync
+vsync
As you can see the last two are pretty close, only off by a couple digits.
However, none of the modes I have tried have worked. For some reason when
Linux reads the EDID it only reports back the 720x480 and 640x480 as valid
modes, which both work. When I try and run the higher modes all I get is a
black screen. The log file does say the Mode "X" was validated but I must
have something wrong somewhere as I just keep getting the black screen. :(
Here's part of my xorg.conf file. I have played with various "Options", you
can see some of them in there.
Section "Monitor"
# HorizSync source: edid, VertRefresh source: edid
Identifier "Monitor0"
VendorName "Unknown"
ModelName "TCR RCA Scenium"
DisplaySize 183 103
HorizSync 30.0 - 34.0
VertRefresh 48.0 - 67.0
# Option "DPMS"
Modeline "1920x1080-HD" 74.250 1920 2008 2052 2200 1080 1084 1094 1125
interlace +hsync +vsync
Modeline "1920x1080-HD2" 74.250 1920 2008 2056 2200 1080 1084 1094 1124
interclace +hsync +vsync
Modeline "1768x992-HD" 74.250 1920 2008 2056 2352 1080 1084 1094 1212
interlace +hsync +vsync
EndSection
Section "Device"
Identifier "Videocard0"
Driver "nvidia"
VendorName "NVIDIA Corporation"
BoardName "GeForce 6600"
Option "UseEvents" "true"
#Option "UseEDID" "FALSE"
#Option "ModeValidation" "NoEdidModes"
#Option "ExactModeTimingsDVI" "True"
EndSection
Section "Screen"
Identifier "Screen0"
Device "Videocard0"
Monitor "Monitor0"
DefaultDepth 24
Option "SecurityTypes" "VncAuth"
Option "UserPasswordVerifier" "VncAuth"
Option "PasswordFile" "/root/.vnc/passwd"
Option "MetaModes" "DFP-0: 1768x992-HD +0+0"
SubSection "Display"
Depth 24
# Modes "1920x1080-HD" "1768x992-HD" "1920x1080-HD2"
EndSubSection
EndSection
If anyone can help me with this mess it would be greatly appreciated!! I am
likely way off on some of my calculated ModeLines as I am new to this or
maybe there is some settings I am missing from my xorg.conf. I find it
rather confusing at times. :-P
Thanks in advance for any insight.
Kevin
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